A prediction analysis apparatus includes a prediction unit for predicting a result value corresponding to one or more attribute values of unknown data using known data indicating the correspondence between one or more attribute values and corresponding result values, and an analysis unit for outputting analysis information indicating how at least one attribute value of the unknown data is to be amended to change a result value predicted by the prediction unit into a desired prediction value. The prediction analysis apparatus with the configuration can be realized by, for example, a computer executing a program for realizing the function of each of the above mentioned units.